These books are a good place to start:

Classical Education by Gene Edward Veith, Jr. and Andrew Kern
Ideas Have Consequences by Richard Weaver
The Case for Classical Christian Education by Douglas Wilson
Recovering the Lost Tools of Learning by Douglas Wilson
Repairing the Ruins edited by Douglas Wilson
The Well-Trained Mind by Jessie Wise and Susan Wise Bauer
The Seven Laws of Teaching by John Gregory

Further Reading:

Paideia Proposal: An Educational Manifesto by Mortimer J. Adler
How to Read a Book by Mortimer J. Adler and Charles Van Doren
The Closing of the American Mind by Alan Bloom
Boundaries with Kids by Drs. Henry Cloud and John Townsend
The Well-Educated Mind: A Guide to the Classical Education You Never Had by Susan Wise Bauer
Marva Collins’ Way by Marva Collins et al
On Secular Education by R.L. Dabney
Why Johnny Can’t Read by Rudolf Flesch
Cultural Literacy: The Schools We Need and Why We Don’t Have Them by E.D. Hirsch
The Devil Knows Latin: Why America Needs the Classical Tradition by E. Christian Kopff
The Abolition of Man by C.S. Lewis
Education, Christianity and the State by J. Gresham Machen
Of Education by John Milton
Amusing Ourselves to Death by Neil Postman
Climbing Parnassus: A New Apologia for Greek and Latin by Tracey Lee Simmons
Shepherding a Child’s Heart by Tedd Tripp